Region of interest processing for iterative reconstruction in x-ray computed tomography

2015 ◽  
Author(s):  
Felix K. Kopp ◽  
Radin A. Nasirudin ◽  
Kai Mei ◽  
Andreas Fehringer ◽  
Franz Pfeiffer ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Iterative Reconstruction ◽  
Region Of Interest ◽  
X Ray ◽  
X Ray Computed

New Developments in High-Resolution X-ray Computed Tomography for Non-Destructive Defect Detection in Next Generation Package Technologies

2008 ◽  
Author(s):  
Mario Pacheco ◽  
Deepak Goyal
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Region Of Interest ◽  
Alternative Methods ◽  
Next Generation ◽  
New Developments ◽  
X Ray ◽  
Ct Technology ◽  
X Ray Computed ◽  
Non Destructive

Abstract The development of a next generation high-resolution x-ray Computed Tomography (CT) tool and its applications are reported in this paper. Some of the key features are region of interest capability, improved time-to-data, improved usability, and data collection automation capability. We also discuss the key technical challenges that are faced by x-ray CT technology. Critical cases that are hard or not possible to isolate by alternative methods are also discussed. Examples include Controlled Collapse Chip Connection (C4) bump cracking and “invisible” non-wetting analysis, ball grid array (BGA) solder joint cracking, and wirebond microcracking and wirebond shorting, as well as demonstration of progressive testing capability.

scholarly journals A Design and Fabrication Method for Wood-Inspired Composites by Micro X-Ray Computed Tomography and 3D Printing

2020 ◽  
Vol 10 (4) ◽  
pp. 1400
Author(s):  
Yubo Tao ◽  
Zelong Li ◽  
Peng Li
Keyword(s):  
Computed Tomography ◽  
3D Printing ◽  
Region Of Interest ◽  
Ct Scanning ◽  
Quality Factors ◽  
Elementary Model ◽  
Wood Structures ◽  
X Ray ◽  
X Ray Computed ◽  
3D Volume

Developments in 3D printing and CT scanning technologies have facilitated the imitation of natural wood structures. However, creating composites from the elementary features of anisotropic wood structures remains a new frontier. This paper aims to investigate the potential of constructing and 3D printing mechanically customizable composites by combining anisotropic elementary models reconstructed from the micro X-ray computed tomography (μ-CT) scanning of wood. In this study, an arbitrary region of interest selected from the μ-CT scanning of a sample of Manchurian walnut (Juglans mandshurica) was reconstructed into isosurfaces that constituted the 3D model of an elementary model. Elementary models were combined to form the wood-inspired composites in various arrangements. The surface and interior structures of the elementary model were found to be customizable through adjusting the image Threshold and Surface Quality Factors during 3D volume reconstruction. Compressional simulations and experiments performed on the elementary model (digital and 3D printed) revealed that its compressive behavior was wood-like and anisotropic. Numerical analysis established a preliminary link between the arrangements of elementary models and the compressive stiffness of respective composites, showing that it is possible to control the compressive behaviors of the composites through the design of specific elementary model arrangements.

Region-of-interest (ROI) mode in industrial X-ray computed tomography

1990 ◽  
Vol 23 (5) ◽  
pp. 255-261 ◽  
Author(s):  
P. Reimers ◽  
A. Kettschau ◽  
J. Goebbels
Keyword(s):  
Computed Tomography ◽  
Region Of Interest ◽  
X Ray ◽  
X Ray Computed

scholarly journals Analysis of iterative region-of-interest image reconstruction for x-ray computed tomography

2014 ◽  
Vol 1 (3) ◽  
pp. 031007 ◽  
Author(s):  
Emil Y. Sidky ◽  
David N. Kraemer ◽  
Erin G. Roth ◽  
Christer Ullberg ◽  
Ingrid S. Reiser ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Image Reconstruction ◽  
Region Of Interest ◽  
X Ray ◽  
X Ray Computed
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